Affliction wrote:Wurth film is not a silicone or is it dielectric.It is a pure base petrolium which coats and adheres to metal surfaces to prevent corrosion long term. It is semi fluid which means it flows SLOWLY but never solidifys. Ideal product for hub motors.
When I Googled "Wurth Film," this is what came up first and I thought it was what you meant:http://www.sjscycles.co.uk/product-Wurth-Wurth-Silicone-Spray-Grease-500ml-Spray-Can-10767.htm
I'll look harder for "Wurth Film," as it does sound ideal from your description. The ACF-50 looks like it would
work the same way according to the page http://www.allyearbiker.co.uk/Bike_Protection/ACF50.html
on the UK Biker page posted.
Is the "Fluid Film" from Canadian Tire the same kind of thing? I think that the
staying semi liquid being one the the key things, and the page does not mention that.http://www.canadiantire.ca/AST/browse/4/Auto/3/AutoFluidsChemicals/LubricantsPenetrants/PRDOVR~0381567P/Fluid%2BFilm%2BRust%2Band%2BCorrosion%2BPrevention.jsp
I somehow missed Page 1 of this thread and note that Drunkskunk brought up some concerns I had as well
regarding packing the hub with grease:
Drunkskunk wrote:problems I see are:
The break down of the insulation and glue due to the solvent action of the grease
I don't think the Permatex Silicone Dielectric Grease has solvents in it.
Drunkskunk wrote:Friction caused by the grease viscosity acting on the airgap. Oil is a lube only when the viscosity is overcome, untill then it sticks things together pretty well. The airgap is so small, and grease is so well effective against shearing, that it would be difficult to spin the motor efficently.
This is certainly a concern depending on how bad the shear force is.
Drunkskunk wrote:Weight. it woudl take a couple pounds of grease to fill one of these things.
Not the little Bafang anyway. I've had it open and it wouldn't take that much.
Drunkskunk wrote:and last of all, Leaks. Grease is a fluid, more so when hot. if the seals can't keep water out, they can't keep the oils from the grease in. This bike would leak more than an MG, and sling grease as the tire spun.
And this I'm not sure about. I'm not sure how hot before it turns fluid. I thought my normal hill abuse around
here where it feels warm by touch would do it (as it does for other grease). But I'm not sure about the Permatex
Silicone Dielectric stuff.
Affliction says it would have to be hotter than I thought:
Affliction wrote:Permatex Dielectric Tune-Up grease...is totally useless unless you are methods and your hub generates 100 degrees+ celcius of heat to melt it to liquid.
So I'll probably go with one of the Spray Films that stay semi-liquid, all-things-considered.
I just might heat up some of the Permatex Dielectric just to see exactly when it liquefies. Now I gotta know